Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 445
Complete Cell. 422 EXPERIMENTAL SCIENCE. be connected with the dynamo as connected last in charging.Although amateurs may find pleasure in constructingand forming a secondary battery, there is no economy insecuring a battery in this way. It is less expensive and lessvexatious to purchase from… … Thermo-Electric Series. electric current could be produced by the direct applicationof heat to a conductor consisting of two metals solderedtogether, the heat being applied to the junction of the twoparts of the circuit. A simple thermopile for illustrating this phenomenonis shown in Fig. 416. It…
Physics · Lantern projection · Electric apparatus and appliances
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